JP2013133059A - Opening/closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an opening/closing device which opens/closes grille opening parts of a front grille arranged in a vehicle body front end part for feeding air to a radiator, and which can feed air fed to the radiator without disturbing its flow.SOLUTION: An opening/closing device includes a shutter member 37 for opening/closing the grille opening parts 31, an actuator 39 for driving the shutter member 37 for opening/closing between a grille opening part opening position and a closing position, and a control part for controlling the actuator 39 for driving. The shutter member 37 covers an air feeding passage 19 between the front grille 5 and the radiator 17 from above in the grille opening part opening position, and closes the grille opening parts 31 on the front side of the front grille 5 in the grille opening part closing position.

Description

  The present invention relates to an opening / closing device that opens and closes a grill opening of a front grill as an air inlet provided at the front of a vehicle body.

  In Patent Document 1, a duct device is provided between a front grille and a radiator behind the front grille, and a plurality of blades provided in the duct portion of the duct device are rotated so that air is supplied to and stopped from the radiator. Is going.

JP 2004-299522 A

  However, in Patent Document 1, since the blade of the duct device stands on the air supply path, there is a problem that the flow of air supplied to the radiator is disturbed and the heat exchange efficiency of the radiator is reduced.

  The present invention has been made in view of such a point, and an object of the present invention is to provide an opening / closing apparatus capable of supplying air supplied to a radiator without disturbing the flow thereof. It is in.

  In order to achieve the above object, the present invention devised a structure for opening and closing the grill opening.

  Specifically, the following solution was taken for an open / close device provided at the front end of the vehicle body for opening and closing the grill opening of the front grill for supplying air to the radiator.

  That is, the first invention is a shutter member that opens and closes the grill opening, a driving unit that opens and closes the shutter member between the opening and closing positions of the grill opening, and a control that controls driving of the driving unit. The shutter member covers the air supply path between the front grill and the radiator from above or below when the grill opening is in the open position, and on the front side of the front grill when the grill opening is in the closed position. The grill opening is closed.

  According to a second invention, in the first invention, the shutter member moves in the vertical direction to open and close the grill opening.

  According to a third aspect of the present invention, in the first or second aspect, the shutter member has an arc shape when viewed from the side of the vehicle, and is rotated about the circle center of the arc by the driving means. It is characterized in that it is driven to open and close.

  According to the first invention, the shutter member that moves between the open position and the closed position of the grill opening covers the air supply path between the front grill and the radiator from above or below at the open position. In the closed position, the grill opening is closed on the front grille front side, so that the shutter member does not stand in the air supply path between the front grill and the radiator during the opening / closing operation, and the air flow is not disturbed in front of the radiator. . Therefore, the air that has entered from the grill opening is fed to the radiator without being obstructed, so there is no possibility that the heat exchange efficiency of the radiator will be reduced. Further, since the shutter member closes the grill opening on the front grille front side, the traveling wind does not hit the front grill when the grill opening is closed while the vehicle is running, and air flow is prevented by preventing turbulence generated in the front grill. Resistance can be reduced. Further, the shutter member covers the air supply path from above or below at the opening position of the grill opening, and the air entering from the grill opening is guided by the shutter member and supplied to the radiator, so that the radiator can be efficiently operated. Can be cooled.

  According to the second aspect of the invention, the shutter member moves in the vertical direction without resisting the air flowing behind the vehicle body, so that it can be moved with a relatively small driving force.

  According to the third aspect of the invention, the cross-sectional shape of the shutter member is made the same arc shape in accordance with the cross-sectional shape of the grill opening, and the shutter member is rotated around the circular center of the arc when the grill opening is opened and closed. Therefore, a plurality of grill openings can be opened and closed with one shutter member, and the opening and closing device can be configured with relatively few parts.

1 is a perspective view showing a state where a grille opening is opened at the front of a vehicle body to which an opening / closing device according to an embodiment of the present invention is applied. It is AA arrow sectional drawing of FIG. FIG. 3 is a view corresponding to FIG. 2 in a state where a grill opening is closed. It is a perspective view of a front grill. It is a perspective view of the switchgear concerning an embodiment of the present invention. It is a control block diagram of the switchgear concerning the embodiment of the present invention. It is a figure which shows the relationship between the vehicle speed of a motor vehicle, the cooling water temperature of a radiator, and the opening-and-closing state of a grill opening.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 3 are views showing a front part of a vehicle body to which an opening / closing device 1 according to an embodiment of the present invention is applied. 1 to 3, 3 is a front bumper, 5 is a front grill disposed on the upper side of the front bumper 3, 7 is a bumper reinforcement that supports the front bumper 3 on the back side, and 9 is a front bumper 3 and a bumper reinforcement. This is an energy absorbing material arranged between the ment 7 and the ment 7. An engine room 11 is formed behind the front grill 5, and the upper part of the engine room 11 is covered with a hood hood 13. A radiator 17 held by a shroud 15 is disposed in the engine room 11 so as to face the front grille 5, and enters between the radiator 17 and the front grille 5 from the front grille 5 and is fed to the radiator 17. An air supply path 19 for air is formed.

  FIG. 4 is a perspective view of the front grill 5. The front surface of the front grill 5 is formed by a rectangular frame portion 21 that curves backward as it goes upward, and the side extension wall portions 23, 23 from the respective rear surfaces of the curved frame portions on both sides in the vehicle width direction of the frame portion 21. Each extend backwards. Furthermore, a bottom extending wall portion 25 extending substantially horizontally rearward is provided at the center in the vehicle width direction of the lower frame portion of the frame portion 21. Further, the front grill 5 is provided with horizontal plate portions 27 and 29 that divide the opening portion surrounded by the frame portion 21 into upper and lower portions. Of these three divided openings, the lower and central openings constitute a grille opening 31 for introducing air into the engine room 11, and the upper opening is a shutter described later of the opening / closing device 1. A shutter insertion port 33 through which the member 37 is movably inserted is configured. As shown in FIGS. 2 and 3, the grill opening 31 has an arc shape when viewed from the side of the vehicle body, and an ornament attachment portion 35 for attaching the ornament 34 is provided at the center in the vehicle width direction. FIG. 1 shows a state in which an ornament 34 is attached to the ornament attachment portion 35.

  As shown in FIG. 5, the opening / closing device 1 that opens and closes the grill opening 31 includes a shutter member 37 that opens and closes the grill opening 31 and an actuator 39 that opens and closes the shutter member 37. 2 and 3, the actuator 39 is installed at the rear end of the bottom extending wall portion 25 of the front grill 5, and rotating shafts 41, 41 extend from both sides in the vehicle width direction. The extended end portions of 41 are respectively connected to the lower ends of arms (connecting members) 43 and 43, and both end portions in the vehicle width direction of the rear end of the shutter member 37 are connected to the upper ends of the arms 43 and 43, respectively. A driving device (driving means) 44 that opens and closes the shutter member 37 includes the actuator 39, rotating shafts 41 and 41, and arms 43 and 43. The shutter member 37 is composed of a single plate member made of a transparent resin, and the cross-sectional shape thereof has an arc shape with the rotation center of the rotation shafts 41 and 41 as the center of a circle, and The radius is larger than the arc formed by the grill opening 31. The shutter member 37 moves in the vertical direction on the front side of the grill opening 31 through the shutter insertion port 33 of the front grill 5.

  That is, the shutter member 37 is driven to open and close around the rotation shafts 41 and 41 by the drive device 44, and covers the air supply path 19 from above as shown in FIG. By rotating counterclockwise, the grill opening 31 is closed on the front side of the front grill 5 as shown in FIG.

  The actuator 39 of the drive device 44 is controlled by a control unit (control means) 45 shown in FIG. A vehicle speed sensor 47 and a temperature sensor 49 for detecting the coolant temperature of the radiator 17 are connected to the control unit 45, and the control unit 45 drives and controls the actuator 39 based on signals transmitted from the sensors. Control of the opening / closing device 1 by the control unit 45 will be described with reference to FIG. FIG. 7 is a diagram showing the relationship between the vehicle speed of the automobile and the coolant temperature of the radiator 17 and the open / closed state of the grill opening 31, where the horizontal axis shows the vehicle speed of the automobile and the vertical axis shows the coolant temperature of the radiator 17. Indicates.

  In the automobile stop state, the control unit 45 positions the shutter member 37 at the grill opening opening position and opens the grill opening 31.

  The vehicle starts running and accelerates (in the direction of the arrow pointing to the right in FIG. 7), the vehicle speed is equal to or higher than the first speed S1 (for example, 20 km / h), and the cooling water temperature is lower than the first temperature T1 (for example, 90 ° C.). In this case, the controller 45 moves the shutter member 37 from the opening position of the grill opening to the closing position to close the grill opening 31. On the other hand, even if the vehicle speed is equal to or higher than the first speed S1, if the coolant temperature is equal to or higher than the first temperature T1, the control unit 45 holds the shutter member 37 at the grill opening opening position and opens the grill opening 31. Keep it open.

  When the vehicle speed is equal to or higher than the first speed S1 and the grill opening 31 is closed, the coolant temperature of the radiator 17 rises (in the upward arrow direction in FIG. 7), and when the temperature becomes equal to or higher than the first temperature T1, the controller 45 Open the grill opening 31 by moving the shutter member 37 from the grill opening closed position to the open position in order to supply air to the radiator 17.

  When the cooling water temperature decreases (in the direction of the downward arrow in FIG. 7) and falls below a second temperature T2 (for example, 80 ° C.) lower than the first temperature T1, the control unit 45 opens the shutter member 37 to open the grill opening. The grill opening 31 is closed by moving from the position to the closed position.

  Thereafter, the vehicle is decelerated (in the direction of the arrow pointing to the left in FIG. 7), and when the vehicle speed falls below the second speed S2 (for example, 10 km / h) that is smaller than the first speed S1, the control unit 45 moves the shutter member 37 to the grill opening closed position. Is moved to the open position to open the grill opening 31, and the open state is maintained even after the automobile stops.

  By controlling in this way, the coolant temperature of the radiator 17 is appropriately controlled while the vehicle is running, and it is possible to prevent a finger or the like from being caught by the shutter member 37 while the vehicle is stopped, and the design of the front grill 5 from the outside. Make it visible.

  As described above, in the opening / closing device 1 according to this embodiment, the shutter member 37 that moves between the open position of the grill opening and the closed position is configured to supply the air between the front grill 5 and the radiator 17 at the open position. While the supply path 19 is covered from above, the shutter opening 37 closes the grill opening 31 on the front side of the front grill 5 at the closed position, so that the shutter 37 has an air supply path 19 between the front grill 5 and the radiator 17 during the opening / closing operation. The air flow is not disturbed in front of the radiator 17. Therefore, since the air that has entered from the grill opening 31 is supplied to the radiator 17 without being obstructed, there is no possibility that the heat exchange efficiency of the radiator 17 is lowered. Further, since the shutter member 37 closes the grill opening 31 on the front side of the front grill 5, when the grill opening 31 is closed during traveling of the automobile, the traveling wind does not hit the front grill 5 and turbulence generated in the front grill 5, etc. Can be prevented and air resistance can be reduced. Further, since the shutter member 37 covers the air supply path 19 from above at the opening position of the grill opening, air entering from the grill opening 31 is guided to the shutter member 37 and supplied to the radiator 19. The radiator 17 can be cooled well.

  Further, since the shutter member 37 moves in the vertical direction without resisting the air flowing behind the vehicle body, it can be moved with a relatively small driving force.

  In addition, the cross-sectional shape of the shutter member 37 is made to be the same arc shape in accordance with the cross-sectional shape of the grill opening 31, and the rotation shafts 41 and 41 and the shutter member 37 provided at the center of the circle are connected by the arms 43 and 43. Since the shutter member 37 is pivoted about the pivot shafts 41 and 41 when the grill opening 31 is opened and closed, the grill opening 31 is divided into the upper and lower parts by one shutter member 37. The opening / closing device 1 can be configured with relatively few parts.

  In the above-described embodiment, the shutter member 37 covers the air supply path 19 from above at the grill opening opening position, but the present invention is not limited to this. For example, when the front grill 5 is disposed on the lower side of the front bumper 3 or when the front grill 5 is disposed on both upper and lower sides of the front bumper 3, the shutter member 37 is supplied with air at the grill opening opening position. The supply path 19 may be covered from below. In particular, when the front grill 5 is disposed below the front bumper 3, the structure of the opening / closing device 1 is upside down with respect to the above embodiment.

  In the above embodiment, the shutter member 37 is made of a transparent resin. However, the shutter member 37 is not limited to this, and may be made of a translucent or opaque resin, for example. However, it is preferable that the shutter member 37 is made of a transparent resin so that the design of the front grille 5 can be visually recognized from the outside during traveling.

  Moreover, in said embodiment, although the shutter member 37 was comprised by the sheet | seat member of 1 sheet, it is not limited to this, For example, you may be comprised by the shutter member connected so that multiple sheets could be bent.

  Further, in the above embodiment, the actuator 39 is installed at the rear end of the bottom extending wall portion 25 of the front grill 5, but is not limited thereto, and is installed outside the side extending wall portion 23, for example. May be.

  In the above embodiment, the drive device 44 is configured by the actuator 39, the rotation shafts 41 and 41, and the arms 43 and 43. However, the present invention is not limited to this. For example, a rack is provided at the side end of the shutter member 37. It may be configured by a motor and a rack and pinion mechanism that rotates the pinion with the motor.

  INDUSTRIAL APPLICABILITY The present invention is useful for an opening / closing device that opens and closes a grill opening of a front grill as an air inlet provided at the front of a vehicle body, and in particular, feeds air supplied to a radiator without disturbing its flow. Suitable for switchgear capable of

DESCRIPTION OF SYMBOLS 1 Opening / closing device 5 Front grill 17 Radiator 19 Air supply path 31 Grill opening part 37 Shutter member 39 Actuator 41 Rotating shaft 43 Arm (connection member)
44 Drive device (drive means)
45 Control unit (control means)

Claims (3)

An opening / closing device that opens and closes a grill opening (31) of a front grill (5) for supplying air to a radiator (17) provided at a front end of a vehicle body,
A shutter member (37) for opening and closing the grill opening (31), a driving means (44) for driving the shutter member (37) to open and close between the opening position of the grill opening and a closed position, and the driving means ( 44) and a control means (45) for driving and controlling,
The shutter member (37) covers the air supply path (19) between the front grill (5) and the radiator (17) from above or below at the grill opening open position, while the grill opening close position. Then, the opening and closing device characterized in that the grill opening (31) is closed on the front side of the front grill (5). The switchgear according to claim 1, wherein
The shutter member (37) moves in the vertical direction to open and close the grill opening (31). The switchgear according to claim 1 or 2,
The shutter member (37) has an arcuate cross section when viewed from the side of the vehicle body, and is driven to open and close by being rotated about the circle center of the arc by the driving means (44). A switchgear characterized by comprising:

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